mpc5200 and spi bus

mpc5200 and spi bus

[Asier Llano Palacios]

I've seen some comments about drivers for SPI of the MPC5200. I'm not
sure about it, but is there anything functional about it?. I want to
know if there is anything already done, in order to use it or improve
it. I need a driver of the SPI bus, so if it is not implemented at all
we should contribute it.

Thank you,
Asier Llano=20
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Re: mpc5200 and spi bus

[Txema Lopez]

[-- Attachment #1: Type: text/plain, Size: 488 bytes --]

Asier Llano Palacios wrote:

>I've seen some comments about drivers for SPI of the MPC5200. I'm not
>sure about it, but is there anything functional about it?. I want to
>know if there is anything already done, in order to use it or improve
>it. I need a driver of the SPI bus, so if it is not implemented at all
>we should contribute it.
>
>  
>
The Denx's 2.4.xx top of tree kernel has MPC5200 SPI support. We are 
using the SPI dev interface from a user aplication and it works fine.


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Re: mpc5200 and spi bus

[Asier Llano Palacios]

I'm working with the a linux 2.6.20.9 with patches from Sylvain's tree.
I've been looking the Den'x 2.5.xx SPI support and it seems that it is
done through GPIOs. I'd like a native SPI implementation, using the
hardware of the MPC5200, because of the performance issue of using a
GPIO, because I'd like to use it at full speed.

Is it done really with GPIOs? If so, is there any other implementation?
If it is possible I'd like it to be for 2.6.x.

Thank you,
Asier

El jue, 26-04-2007 a las 16:49 +0200, Txema Lopez escribi=F3:
> Asier Llano Palacios wrote:
>=20
> >I've seen some comments about drivers for SPI of the MPC5200. I'm not
> >sure about it, but is there anything functional about it?. I want to
> >know if there is anything already done, in order to use it or improve
> >it. I need a driver of the SPI bus, so if it is not implemented at =
all
> >we should contribute it.
> >
> > =20
> >
> The Denx's 2.4.xx top of tree kernel has MPC5200 SPI support. We are=20
> using the SPI dev interface from a user aplication and it works fine.
>=20
>=20
=20
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review and notify the sender immediately.
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=B5SysCom utiliza software antivirus, pero no se hace responsable de los =
virus contenidos en los ficheros anexos.

Re: mpc5200 and spi bus

[Txema Lopez]

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Asier Llano Palacios wrote:

>I'm working with the a linux 2.6.20.9 with patches from Sylvain's tree.
>I've been looking the Den'x 2.5.xx SPI support and it seems that it is
>done through GPIOs. 
>
¿2.5.xx?. I talked about a 2.4.xx version.

>I'd like a native SPI implementation, using the
>hardware of the MPC5200, because of the performance issue of using a
>GPIO, because I'd like to use it at full speed.
>
>Is it done really with GPIOs? If so, is there any other implementation?
>  
>
Yes, you can use the MPC5200's dedicated SPI (spi-algo-mpc5xxx.c) or use 
a PSC in SPI codec mode (spi-algo-mpc5xxx-psc.c).

>If it is possible I'd like it to be for 2.6.x.
>  
>
I don't know nothing about the MPC5200 SPI implementation in the 2.6.x 
kernel.

Best regards,


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title:Sotware engineer
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tel;fax:(34) 943791712 
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version:2.1
end:vcard

Re: mpc5200 and spi bus

[Asier Llano Palacios]

El vie, 27-04-2007 a las 14:41 +0200, Txema Lopez escribi=F3:
> Asier Llano Palacios wrote:
>=20
> >I'm working with the a linux 2.6.20.9 with patches from Sylvain's =
tree.
> >I've been looking the Den'x 2.5.xx SPI support and it seems that it =
is
> >done through GPIOs.=20
> >
> =BF2.5.xx?. I talked about a 2.4.xx version.
>=20
Sorry this was a mistyping. I was pretending to say 2.4.xx.

> >I'd like a native SPI implementation, using the
> >hardware of the MPC5200, because of the performance issue of using a
> >GPIO, because I'd like to use it at full speed.
> >
> >Is it done really with GPIOs? If so, is there any other =
implementation?
> > =20
> >
> Yes, you can use the MPC5200's dedicated SPI (spi-algo-mpc5xxx.c) or =
use=20
> a PSC in SPI codec mode (spi-algo-mpc5xxx-psc.c).

Thank you very much. I don't know where I was looking. I've seen the
code and it seems interesting and easy to port.

> >If it is possible I'd like it to be for 2.6.x.
> > =20
> >
> I don't know nothing about the MPC5200 SPI implementation in the 2.6.x =

> kernel.
>=20

I'll have a look. If don't see anything the code from 2.4.x is good
starting point to port it.

> Best regards,

Thank you very much for the information.=20
=20
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Re: mpc5200 and spi bus

[Sascha Hauer]

Hi,

On Wed, May 02, 2007 at 10:02:44AM +0200, Asier Llano Palacios wrote:
> > 
> 
> I'll have a look. If don't see anything the code from 2.4.x is good
> starting point to port it.

There was a patch for the PSC in SPI mode for 2.6 posted here:

http://sourceforge.net/mailarchive/forum.php?thread_name=45DD9ABF.9010009%40toptica.com&forum_name=spi-devel-general

I can forward you the patch if you like, because the sourceforge server
only replies with "Insufficient parameters" when I click on the patch
link :(

I myself wrote a driver for the dedicated SPI port which I can post on
spi-devel-general tomorrow (after I looked over it again).

Best regards,
  Sascha

Re: mpc5200 and spi bus

[John Rigby]

This will take you to a page where the download attachment link will
actually work:

http://sourceforge.net/mailarchive/attachment.php?list_name=spi-devel-general&message_id=45DEDC70.7010301@toptica.com&counter=1

On 5/2/07, Sascha Hauer <s.hauer@pengutronix.de> wrote:
> Hi,
>
> On Wed, May 02, 2007 at 10:02:44AM +0200, Asier Llano Palacios wrote:
> > >
> >
> > I'll have a look. If don't see anything the code from 2.4.x is good
> > starting point to port it.
>
> There was a patch for the PSC in SPI mode for 2.6 posted here:
>
> http://sourceforge.net/mailarchive/forum.php?thread_name=45DD9ABF.9010009%40toptica.com&forum_name=spi-devel-general
>
> I can forward you the patch if you like, because the sourceforge server
> only replies with "Insufficient parameters" when I click on the patch
> link :(
>
> I myself wrote a driver for the dedicated SPI port which I can post on
> spi-devel-general tomorrow (after I looked over it again).
>
> Best regards,
>   Sascha
>
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>

Re: mpc5200 and spi bus

[Asier Llano Palacios]

Thank you very much for the patch. I will tell you how it worked.
Currently I need the SPI mode PSC driver (this one), but the other one
may be quite interesting also.

Thank you,
Asier

El mi=E9, 02-05-2007 a las 14:19 -0600, John Rigby escribi=F3:
> This will take you to a page where the download attachment link will
> actually work:
>=20
> =
http://sourceforge.net/mailarchive/attachment.php?list_name=3Dspi-devel-g=
eneral&message_id=3D45DEDC70.7010301@toptica.com&counter=3D1
>=20
> On 5/2/07, Sascha Hauer <s.hauer@pengutronix.de> wrote:
> > Hi,
> >
> > On Wed, May 02, 2007 at 10:02:44AM +0200, Asier Llano Palacios =
wrote:
> > > >
> > >
> > > I'll have a look. If don't see anything the code from 2.4.x is =
good
> > > starting point to port it.
> >
> > There was a patch for the PSC in SPI mode for 2.6 posted here:
> >
> > =
http://sourceforge.net/mailarchive/forum.php?thread_name=3D45DD9ABF.90100=
09%40toptica.com&forum_name=3Dspi-devel-general
> >
> > I can forward you the patch if you like, because the sourceforge =
server
> > only replies with "Insufficient parameters" when I click on the =
patch
> > link :(
> >
> > I myself wrote a driver for the dedicated SPI port which I can post =
on
> > spi-devel-general tomorrow (after I looked over it again).
> >
> > Best regards,
> >   Sascha
> >
> > _______________________________________________
> > Linuxppc-embedded mailing list
> > Linuxppc-embedded@ozlabs.org
> > https://ozlabs.org/mailman/listinfo/linuxppc-embedded
> >=20
=20
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